Physicists from Samara and Novosibirsk discovered a new phenomenon

Scientists from G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science, Novosibirsk State University, Novosibirsk State Technical University, Samara State Aerospace University (SSAU) and Image Processing Systems Institute (IPSI) of the Russian Academy of Science, became the first people in the world obtained terahertz non-diffractive twisted Bessel beams and used them for the first time the formation of surface electromagnetic waves on the metal surface. It is reported by the press service of the Novosibirsk State University.
 

Through a scientific experiment, the researchers unexpectedly found the new phenomenon - in the transformation of a twisted beam to the surface waves, the last ones occurred only on the one side from the optical axis and “switched” to the other side only in case of its reversal rotation.

An article written on the basis of this study became the choice of editorial office of Physical Review Letters - one of the most respected journals in physics.
 

According to Boris Knyazev, one of the authors of the article “Generation of terahertz surface plasmon polaritons using non-diffractive Bessel beams with orbital angular momentum”, Professor of the Department of General Physics and Head of the Applied Electrodynamics Laboratory of the Physics Faculty of Novosibirsk State University and Chief Research Scientist of G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science, the collaboration of physicists from Novosibirsk and Samara relates to the field of optics and information technology, its results can be used in many applications. In particular, non-diffractive beams may be used for information transmission and creation of far infrared location systems.
 

The research was conducted on the Novosibirsk free electron laser, the most powerful source of terahertz radiation (in the range of 1012 to 1013 Hz) in the world, made and operating in G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science. Optical diffractive elements were made in SSAU.
 

The team of authors of the article “Generation of terahertz surface plasmon polaritons using non-diffractive Bessel beams with orbital angular momentum”:
 

- Boris Knyazev, Professor of the Department of General Physics of the Physics Faculty of Novosibirsk State University and Chief Research Scientist of G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science;

- Yuliya Choporova, Junior Research Scientist of G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science, Teaching Assistant of the Department of General Physics;

- Mikhail Mitkov, Senior laboratory technician of G. I. Budker Institute of Nuclear Physics- Syberian Branch of the Russian Academy of Science, Master’s Degree student of Novosibirsk State Technical University;

- Vladimir Pavelyev, Doctor of Physics and Mathematics, Head of SSAU Department of Nano-engineering and Chief Research Scientist of the Image Processing Systems Institute of the Russian Academy of Science;

- Boris Volodkin, Deputy Director of SSAU Scientific and Educational Centre on Nanotechnology.